But it also notes that babies in western countries who were exclusively breastfed for 6 months were apparently less likely to succumb to infections, such as pneumonia, than those fed for less than 6 months.

exposure to infectious diseases, including HIV, to chemical contaminants, such as some illegal drugs, and to a limited number of prescription drugs that might be in the human milk, if the donor has not been adequately screened

if human milk is not handled and stored properly, like any type of milk, it could spoil.

Janet Fang has written for Nature, Discover and the Point Reyes Light. She is currently a lab technician at Lamont-Doherty Earth Observatory. She holds degrees from the University of California, Berkeley and Columbia University. She is based in New York.
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